Boilers, steam traps, and heat utility equipment that produce and distribute process steam and hot water.
Steam is the oldest utility and the most dangerous one most plants still run. A 150 psi leak from a quarter-inch line holds enough energy to kill someone, and you cannot see it from ten feet away. The safety rules in this category were written after incidents. Every one of them has someone's name on it. Respect that.
A plant with old traps typically has 15 to 30 percent of them failed open. Each failed-open trap leaks live steam to the condensate return. You can hear them with ultrasonic testers, see them with infrared cameras, or confirm them with conductivity meters. A formal trap-testing program pays back in months. If you do not have one, start one. The fuel savings alone are worth the labor.
Every fire-tube and water-tube boiler has one. A low-water condition on an empty boiler leads to thermal shock on hot tubes, then tube rupture, then catastrophe. The cutoff must be tested in a way that actually proves it works, on a schedule matched to the boiler's operating hours. Make sure your test procedure is the one the manufacturer specifies.
Every failure mode on a boiler tube is linked to water chemistry.
Most jurisdictions require an annual boiler inspection by a qualified inspector, and your insurer may require more. Do not skip it. Also: if you are tuning combustion after any fuel-system change, bring in a combustion specialist with a portable analyzer. Excess air is expensive, and insufficient air is soot and CO. The band in between is narrower than it looks.
Deeper explainers and background reading for technicians working in steam & heat.
Preventive maintenance replaces the 'run it until it breaks' approach with scheduled inspections and part replacements. Plants that run a solid PM program see 25-30% fewer emergency work orders within the first year. Here is how to build one that sticks.
The essential maintenance KPIs with formulas, benchmarks, and improvement strategies. OEE, MTTR, MTBF, PM compliance, schedule compliance, and more.
Predictive maintenance uses sensor data to spot problems before they cause downtime. A vibration sensor catching a bearing defect two weeks early costs you a $200 part swap instead of a $15,000 emergency rebuild. This guide explains the tech, the math, and where to start.
Poor lubrication causes up to 40% of bearing failures. Wrong grease, wrong amount, wrong interval, or contaminated supply are the usual culprits. Getting lubrication right is the single highest-ROI maintenance improvement most plants can make.
Images on this page sourced from Freepik. Credits: Ansarrio, pixel-shot.com, dasun404malaka.
